Shire



(No Model.) 4 Sheets-Sheet 2;

G. L. RIDGWAY.

HEATING STOVE 0R PURNACE. .-No. 891,428. Patented' 001;. 28, 1888.

WITNES ES I S NVENTD N. Farms, Phmwuwgmpher. wusnmgm", D. a.

4 Sheets-Sheet 3.

(No Model.)

G` L. RIDGWAY.

HEATING sTovE 0R FURNAGE.

Patent-ed oet. 28, 1888.

INVENTEI my WITNSSES N. PETERS, Plmm-Linwgrapher. wnhingtm D. C,

(N Model.) 4 Sheets-Sheet 4. C. L. RIDGWAY.

HEATING STOVE OB. FURNAGE.

No. 891,428. Patented Oct. 23, 1888.

` IN V .v E |\l T I N. PETERS4 PhoxaLiehngr-apher. wnshinmw, D. a

'rr Starts arnsrr trice@ CHARLES L. RIDGVAY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE RIDGVAY FURN ACE AND STOVE COMPANY, OF NASHUA, NEW HAMP- SHIRE.

HEATENG STOVE CR FURNACE.

SPECIFICATION forming part of Letters Patent No. 391,428, dated @eteber 23, 1888. Application filed March 1, 1886. Serial No. 193,579. (No model.)

To @ZZ whom it may concern,.-

Be it known that I, CHARLES L. RrncwAY, of Boston, in the county of Sutfolk and Commonwealth of Massachusetts, a citizen of the United States, have invented a new and useful Improvementin Heating Stoves and Furnaces, ot' which the followingis a full, clear, and exact description, reference being had to the ac companying drawings, forming a part of this specification, in explaining its nature.

The invention is animprovenient upon that which is described in Letters Patent of the United States N o. 281,795, which were issued to me July 24, 1883; and it relates especially to the fire-pot wall and to the special means employed for operating and revolving it.

It further relates to various details of eonstruction, all of which will hereinafter be described and explained.

Referring to the drawings, Figurel is acentral vertical section of a furnace having the features of my invention. Fig. 2 is a front elevation of the furnace. Fig. 3 is a section upon and in plan below the line .fr .fr of Fig. l. Fig. 4 is a detail view illustrating the manner of supporting the iire-pot wall. Fig. 5 is a view in section further illustrating the devices represented in Fig. Li. Fig. 6 is a perspective view of one section of a tire-pot wall. Fig. 7 is a view of a ring or sleeve which forms the lower part of the trepot. Fig. S is a view in perspective of the plate which bears or supports the tire-pot wall.

A is the ash-pit; c, the tire-pot; a', the cornbustion-chamher; B, theinner radiator orcasing ot' the furnace, forming the combustionchamber and the downward extension b thereof, which encircles the rire-pot.

B is the outer casing of the furnace, and C is the wall ot the lire-pot.

I have shown the fire-pot as composed ot a series of sections, c, which are substantial counterparts, and which preferably are united with each other, as hereinafter described. Each ofthe sections c is composed of an npper curved bar or segment of a ring, c3, a lower curved bar or segment, and the intermediate connecting-bars, c', which alternate with the corresponding openings c2, all as best seen in Fig. 6. The edge ofthe upper crossbar or segment, c, of each section, upon one side thereof', has the recess c, and the opposite extremity of the section has a corresponding projection or tongue7 c7, the tongue of one section being adapted to enter and fit the recess in the coincident section, by which means the members of the series are firmly secured together, the whole constituting the complete annularl or cylindrical tire-pot wall.

The lower extremity or edge of the fire-pot wall is received within the recess ci of the annular supportingplate D, and it is held therein, and the joint between these two coincidentpartsis covered by the ring or cylindrical piece c", which has an outwardlyextending section, cw, which rests upon a flange, c, of the supporting-plate D, which extends inward somewhat farther than the lower extremity oi' the iire-pot wall. This ring or cylindrical piece c forms, in effect, a downward extension to or prolongation of the firepot, and its lower edge extends nearly tothe uppersurfaee of the grate E.

The outer ilangelike edge, dw, of the annular supporting-plate D rests lightly uponthat is, it is barely in contact with--the flange cw, which extends inward from the ash-pit wall or plate c,- but the plate is mainly sustained by the anti-friction supports c, which are in this instance represented as rollers provided With pivots c, which arejournaled in brackets c, which extend inwardly from the ash-pit wall or plate cl3, and which may be provided in any desired number.

To prevent the annular supportingplate D from bearing against the inner surface of the vertical wall B, which constitutes the inner radiating easing or shell of the furnace, I have provided such plate with a downward extension or bottom flange, d, which affords an outer bearing-face,d`,and Ihave provided,also. the anti friction rollers ci, having vertical axes, as shown in Figs. 3, 4, and 5, to bear against the face d2. These rollers or revoluble bearings c16 are supported upon laterally-pro jeeting bearings c1T of the brackets c, and by receiving any lateral movement of the plate D they serve to prevent its edge do from coming in contact with the lower portion, b, of the inner shell or radiating-casing, B, of the furnace.

The plate D is further provided upon its under surface, near its outer edge, with the continuous series of gear teeth or cogs di, and I have arranged in the ash-pit a pinion, dt, upon a shaft, di, to engage with the teeth or cogs upon the plate D and revolve the same, together with its superposed irepot wall. 'Ihe shaft d5 is suitably supported in a fixed part of the furnace, and its outer end, which projects through the outer casing of the furnace, may be squared to receive an operating-V crank in the ordinary lowdown manner; or it may be connected with an elevated operating-crank, as d, to enable an operator to revolve the supporting-plate and its superposed parts without stooping. In the drawings I have represented this high-up crank d as arranged at the left hand of the combustionchamber; but I do not confine myself to this special location, although I consider it the best, because the most convenient. This crank u d is connected or secured to asleeve, clhwhich is supported by the shaft d8, which is fastened to the furnace-casing, and which carries or supports a chain-pinion, di. The lower shaft, d5, also has a chain pinion, d10, and these chain-pinions are connected by the chain du. As tosize, the upper pinion may bear any de sired relation to the lower pinion. In the drawings it is represented as somewhatsmaller.

It will be observed that the fire-pot wall and its connections comprise the annular plate D, the wall proper-that is, the sections or segments c-and the ring or sleeve ci. In other words, the fire-pot and ring are carried by the annular plate D,whieh is so shaped as to suitably receive them, and the plate D is itself mounted upon anti-friction supports. It will also be seen that the plate D furnishes, by its teeth or cogs d, means whereby the fire-pot is revolved, and that the means shown comprise a pinion, which is arranged to engage with the teeth upon the plate, and a shaft, which carries the pinion and which extends outwardly through the exterior wall of the furnace.

The grate E is arranged immediately below the opening or aperture inclosed by the ring or sleeve c". It has a downwardly-extending pivot-pin, e, which enters a recess in a supporting bar, rod, or bracket, e', which projects horizontally from the vertical face of the ashpit wall. It hasalso a bar or rod,ef,which extends horizontally into the opening or passage e3 to the aslrpit, and which is supported in a horizontal position by the hook et. By unhooking the shaft or rod ez, I am enabled to depress it and thus tilt the grate forward upon its pivotal center. If the rod or shaft c be not unhooked, the grate can be turned or dumped to the right-that is, toward the side opposite to that from which the supporting armor bracket e projects, the pivotal connection with the same being,as already described, such as to facilitate such operation.

A fire-pot wall which is composed of sections is not herein broadly claimed, for I am well aware that such a construction has long been known. v

A fire-pot wall which is composed of a series of vertical open-work or grated sections is not herein broadly claimed, the same being shown in an application serially numbered 193,583, filed by me in the United States Patent Office 011 the 1st day of March, 1886. Neither a firepot wall which is supported upon a rotary plate and is revoluble therewith, nor a tire-pot which is rotated through the operation of a shaft and pinion, is herein broadly claimed, both being shown in United States Patent No. 281,795, which was issued to me on the Zlith day of July, 1883.

Having thus fully described my invention, I claim and desire to secure by Letters Iatent of the United States- 1. In a heating stove or furnace, a fire-pot wall which consists of a series of sections, c, each of which is composed of an upper curved bar or segment, c3, having at one extremity a recesso, and at the opposite extremity a projection or tongue, ci, a lower curved bar or segment, et, and a series of vertical intermediate connecting-bars, c', substantially as described.

2. The combination, in a heating stove or furnace, of the annular plate D, sustaining the fireepot wall and having bottom iange, as shown, the said re-pot wall, the anti-friction supports c, and the anti-friction guides om, as and for the purposes described.

3. The combination, in a heating stove or furnace, of a revoluble fire-pot wall, which is provided with an outwardly-projecting horizontal operatingshaft, which is provided with an exterior pinion, an elevated exterior operating-shaft which is provided with a pinion and with a crank-arm, and a chain which connects such upper anddower exterior pinions together for operation.

4. In a stove or furnace, the combination of a revoluble plate, which supports the fire-pot wall and which is provided with engaging serrations, and an operating-shaft which is provided upon its inner end with a pinion for engagement with the serrations upon the supporting-plate, and which is provided upon its outer end with a pinion for engagement by a chain, whereby the supporting-plate is made operable from an exterior point above the plane of such plate.

5. 'Ihe combination of the plate D, the firepot wall resting thereon, the downward exteni sion d', havingV the surface d?, the antifriction supports or bearings, and the lateral anti-fric# tion bearings d, adapted to bear against the surface d2 of the said extension d', all substair tially as described.

6. In a heating stove or furnace, the combination, with the revolnble recessed plate D, supporting the fire-pot wall C and resting IOO IIO

vided with a ire-pot Wall which is horizontally revoluble upon anti-frioticn supports,and with an independent grate which is adapted 2o to be tilted or dumped in either of two directions Which are at right angles with each other, substantially as specified.

l0. Aheating stove or furnace which is provided With a revoluble plate which supports 2; the fire-pot wall, and With a lire-pot Wall which is composed of vertically-arranged interlocking or self-securing sections, substantially as and for the purposes described.

CHARLES L. RlDGW'AY.

Witnesses:

GEORGE A. Giens, EDWARD G. STEVENS. 

